I am using ActiveMQ with the Spring framework and the Quartz Scheduler. On
the server, I’ve started an ActiveMQ broker. Also on the server I have a
job dispatcher application that reads job schedules from a MySQL database
and starts a Quartz Scheduler instance. When a job is created, it uses
ActiveMQ to dispatch job information to a reporting queue. I have a client
machine that is waiting to receive messages from the reporting queue. Once
it receives a message it launches a new reporting thread.
Up until three days ago, my code was working perfectly. A job would be
created, a map of messages would be sent to the reporting queue, the client
dispatcher would successfully retrieve the message from the reporting queue
and launch a new reporting thread which runs a report. However, another
programmer did a code check in which modified some of my code. Since he did
his code check in, each time we run our test application we are getting the
following exception each time a message is sent or retrieved from the queue:
[WARN,ActiveMQConnection,tcp://localhost/127.0.0.1:61616] Cleanup failed
javax.jms.JMSException: Cannot write to the stream any more it has already
been closed
at
org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:57)
at
org.apache.activemq.ActiveMQConnection.asyncSendPacket(ActiveMQConnection.java:1043)
at
org.apache.activemq.ActiveMQConnection.cleanup(ActiveMQConnection.java:1191)
at
org.apache.activemq.ActiveMQConnection.transportFailed(ActiveMQConnection.java:1585)
at
org.apache.activemq.ActiveMQConnection.onException(ActiveMQConnection.java:1338)
at
org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:102)
at
org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:102)
at
org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:102)
at
org.apache.activemq.transport.TransportSupport.onException(TransportSupport.java:90)
at
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:149)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.io.EOFException: Cannot write to the stream any more it has
already been closed
at
org.apache.activemq.transport.tcp.TcpBufferedOutputStream.checkClosed(TcpBufferedOutputStream.java:131)
at
org.apache.activemq.transport.tcp.TcpBufferedOutputStream.write(TcpBufferedOutputStream.java:69)
at java.io.DataOutputStream.writeInt(DataOutputStream.java:180)
at
org.apache.activemq.openwire.OpenWireFormat.marshal(OpenWireFormat.java:169)
at
org.apache.activemq.transport.tcp.TcpTransport.oneway(TcpTransport.java:117)
at
org.apache.activemq.transport.TransportFilter.oneway(TransportFilter.java:90)
at
org.apache.activemq.transport.WireFormatNegotiator.oneway(WireFormatNegotiator.java:65)
at
org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:44)
at
org.apache.activemq.transport.ResponseCorrelator.oneway(ResponseCorrelator.java:54)
at
org.apache.activemq.ActiveMQConnection.asyncSendPacket(ActiveMQConnection.java:1041)
... 9 more
We have gone through and tried to figure out what slice of code he may have
added or modified that could be causing this exception. But, after three
days, we have not been able to determine why we are getting this exception.
Here are few givens:
The class we use to send messages to a queue is the following:
public class QueueMessage implements Serializable {
private Map parameters = new HashMap();
public QueueMessage() {
}
public String getParameterValue(String name) {
return parameters.get(name);
}
public void addParameter(String name, String value) {
parameters.put(name, value);
}
public boolean containsKey(String name) {
return parameters.containsKey(name);
}
public String toString() {
final StringBuilder builder = new StringBuilder();
final Set> set = parameters.entrySet();
for (Map.Entry entry : set) {
builder.append("\nname=");
builder.append(entry.getKey());
builder.append(" value=");
builder.append(entry.getValue());
}
return builder.toString();
}
}
The class that actually does all of the work of sending or retrieving a
QueueMessage object is the following:
public class QueueSenderReceiver {
private final String appContext =
"./config/jmsUtils/ApplicationContext.xml";
private final String clientContext =
"./config/jmsUtils/ClientContext.xml";
private final String templateName = "jmsTemplate";
private final JmsTemplate template;
private final ApplicationContext ctx;
public QueueSenderReceiver() {
final String[] configFiles = new String[2];
configFiles[0] = appContext;
configFiles[1] = clientContext;
ctx = new FileSystemXmlApplicationContext(configFiles);
template = (JmsTemplate) ctx.getBean(templateName);
}
/**
* Used to send any type of object over a queue.
*
* @param destinationName name of the queue to send the object to.
* @param object used to send a QueueMessage and other objects.
*/
public void send(String destinationName, final Object object) {
final Destination destination = (Destination)
ctx.getBean(destinationName);
template.convertAndSend(destination, object);
}
public void send(String destinationName, final String message) {
final Destination destination = (Destination)
ctx.getBean(destinationName);
template.send(destination, new MessageCreator() {
public Message createMessage(Session session) throws
JMSException {
return session.createTextMessage(message);
}
});
}
public Object receive(String destinationName) {
final Destination destination = (Destination)
ctx.getBean(destinationName);
template.getReceiveTimeout();
return template.receiveAndConvert(destination);
}
}
The Spring ApplicationContext.xml file contains the following:
tcp://localhost:61616
The Spring ClientContext.xml file contains the following:
JobAuditQueueReportDispatcherQueueFeedDispatcherQueue
The current version of ActiveMQ I’m using is 4.0-M4.
I hope this is enough information to us find out why we may be getting this
exception. Any help from anyone would be much appreciated.
Thanks.
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